Wu Peng's meaning is very simple.

What he said is that the column and metal mesh of the protective fence have been installed and fixed, once the soil in the foundation pit is dug out, the foundation pit is poured with concrete, so that one by one, because of the lack of soil to fix the column, the fresh concrete can not stabilize the column before it is solidified, and it is very likely that the column will fall.

"Do you want to say that continuous pouring of concrete for the column will cause the column to be unstable, and it is very likely that the protective fence will tipple?" Shu Cheng asked with a smile.

Wu Peng was stunned for a moment and said, "Yes, I'm worried about what to do if the column falls down after all the soil is dug out?" ”

"Wu, you are stuck in the tip of the horns, who stipulates that the column is poured, it must be poured continuously one by one? Can't you pour one pillar apart? In this way, the column in the middle is poured concrete, and the soil on both sides is fixing the column to stabilize the column, and the problem is solved. The next time you pour, you pour the columns on both sides, so that the concrete of the column poured before the previous time has already solidified, and it fully has the effect of stabilizing the column. Shu Cheng continued: "We are not a new line now, we can't be like the protective fence of the new line, after leveling the site, and then give him a super flat line, and then follow the metal mesh after the column is poured, these conditions can not be met on the spot." Because the road surface is uneven, the columns are poured first, and in some places, it is impossible to install metal mesh at all, and I think you also know the actual situation. ”

For the protective fence, the price to the construction team is not very high, this work is completely the amount of work determines a qiē project, as if the installation can not be completed, the construction team can not make money.

Therefore, according to the new line, the method of pouring the columns is not very adaptable, and the construction team cannot fine-tune, so that people do not make money at all.

"yes, why didn't I think of that?" Hearing Shu Cheng's words, Wu Peng seemed to suddenly realize.

"It's not that you didn't expect it, it's mainly that your thinking is stiff and you haven't turned this corner." Shucheng Road.

Wu Peng nodded and said: "This is indeed feasible, but Brother Shu, I still think that when this column is poured, the thirty centimeters around the column can be satisfied, and the concrete cannot guarantee a depth of seventy centimeters. ”

Shu Cheng did not reply to Wu Peng's words, but took the drawings and looked at them.

On the drawing, it is noted that the size of the foundation is 60cm*60cm*70cm, that is, the length and width of the column foundation are 60 cm, and the burial depth is 70 cm.

When he saw the drawings, Shu Cheng understood that it was impossible to pour the column foundation to a depth of 70 cm.

This foundation pit, according to this size to calculate, the amount of concrete is calculated by the length by the width by the height, the calculated number is 0.252 square, minus the volume of the column, there are also 0.25 square, that is to say, the four foundations, is 1 square concrete.

What is the concept of concrete, everyone only needs to measure a thing with a length, width and height of one meter, and you will know what its volume is.

This concrete is not commercial concrete, the so-called commercial concrete, that is, commercial concrete, but the construction team on-site mixing, because the commercial concrete tanker can not enter the construction site at all.

The concrete that the construction team mixes by itself, and only four foundations are poured in 1 square of concrete, how much can he pour in a day? I'm afraid I won't even be able to earn the wages of migrant workers.

What's more, in the concrete they mix by themselves, the sand and gravel are provided by themselves, and the project department only provides cement.

Therefore, after some rough calculations, Shucheng knew that it was impossible to construct according to the design.

The construction team can meet the cross-section of 60cm * 60cm in length and width at most, and as for the depth of 70cm, it is unlikely to be satisfied.

Not to mention the depth of 70 exercises, even if the bottom 40 centimeters are filled with soil, and the top 30 exercises are poured concrete, after the concrete is solidified, this column will not be able to move the slightest.

Shu Cheng put down the drawings, looked at Wu Peng, and said: "Wu, what about this matter, according to the design, this is how it is done, but sometimes, we do construction, we also have to learn to be flexible, this 70 cm depth, no matter which construction team, is unlikely to be satisfied, let me tell you, the construction team can pour a depth of 50 cm, thank God, believe it or not." ”

"50 centimeters?" Wu Peng frowned.

"Yes, it's 50 centimeters, if you don't believe it, you can call Sun Qi, didn't he pour a section of protective fence columns over there, I guess the foundation of the column on his side is not even 30 centimeters." Shu Cheng said with a smile.

Regarding Sun Qi's protective fence, when Shu Cheng was at home two days ago, Sun Qi made a phone call to Shu Cheng and talked about the pouring of the protective fence foundation, and the deepest one they poured was only 35 cm.

"Will this work?" Wu Peng said with some doubts.

"Wu, you are still inexperienced, then let me ask you, is the protective fence an ancillary project?" Shucheng Road.

"yes!" Wu Peng nodded.

The so-called ancillary projects are some incidental or additional engineering projects, which have no impact on the main body of the project.

"Since it's an ancillary project, isn't it used to block people, you have to learn to be flexible, I'm not teaching you to cut corners, it's not the case at all, if it's the main project, you can't do it like this, but the protective fence is a thing, you pour a depth of 40 cm, and it's not load-bearing, it's nothing more than blocking people, it's enough, and the life of the metal mesh protective fence is 30 years, so it's enough." Shu Cheng said to Wu Peng.

"Well, I know what to do." Hearing Shu Cheng's explanation, Wu Peng nodded and said.

"However, there is another point that must remind you that the depth of the protective fence can not be enough, but the width of both sides of the protective fence must be guaranteed to be 30 centimeters from the center of the column to both sides, because this is also related to the acceptance of a project. Shu Cheng explained.

Engineering projects, as long as the project can be concealed, that is, invisible on the surface, after pouring concrete, it will be fine, unless something big happens, send someone down to investigate, then you think you are unlucky.

But this happens once-in-a-lifetime, and if you do, congratulations, you've hit the jackpot.

Even if the depth of your pouring under the column is 10 cm, and the surface width is satisfied, as long as the acceptance unit does not dig up, you are also an excellent project.

But if you pour 70 centimeters in depth and 25 centimeters in width on the surface, people will directly say that you are not qualified.

That's the gap, it's a fact.

"Yes, I know." Wu Peng responded.

Shu Cheng suddenly thought of something, picked up the drawings and took a closer look, and said to Wu Peng: "The last point is the control of this depth, look at this column, 2.2m long, remove the 70 cm buried in the concrete, from top to bottom, there is still 1.5m left, here you have to pay attention, when it is time to pour, you not only have to meet the width of 30 cm around the column, but also one thing must be met, that is, from the top of the column down to the amount of 1.5m, concrete pouring, must go to this position, because when accepting, they will not dig your foundation to see how deep it has been poured, they only need to measure 1.5m from the top of the column, if your concrete is not poured to this position, then they can say that your foundation is poured less than 70 cm. ”

Everything, you have to grasp the point, there are some hidden things, others are not good to measure, but others can measure the exposed part, according to the full length minus the exposed part, isn't it the hidden part?

In the construction project, it is necessary to consider many aspects, and only in this way can we fight the old guys of those quality inspection stations and acceptance units.

These experiences were also accumulated little by little in Shu Cheng's previous life, so his eyes often looked farther and thought more than Wu Peng.

Learning to be flexible is sometimes especially important in construction projects.

At the request of many readers, write more technical content, then the previous chapters, write more technical content, some readers may not understand well, and finally ask for a collection and recommendation, thank you! (The novel "Railway Era" will have more fresh content on the official WeChat platform, and there will also be a 100% lottery gift for everyone!) Open WeChat now, click on the "+" sign in the upper right corner to "add friends", search for the official account "qdread" and follow, hurry up! (The novel "Railway Era" will have more fresh content on the official WeChat platform, and there will also be a 100% lottery gift for everyone!) Open WeChat now, click on the "+" sign in the upper right corner to "add friends", search for the official account "qdread" and follow, hurry up! )xh118